Matter-wave solitons of collisionally inhomogeneous condensates
Georgios TheocharisDepartment of Physics, University of Athens, Panepistimiopolis, Zografos, Athens 157 84, GreecePeter SchmelcherPhysikalisches Institut, Philosophenweg 12, Universität Heidelberg, 69120 Heidelberg, GermanyP. G. KevrekidisDepartment of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003-4515, USAD. J. FrantzeskakisDepartment of Physics, University of Athens, Panepistimiopolis, Zografos, Athens 157 84, Greece
2005en
ABI
Annotatsiya
We investigate the dynamics of matter-wave solitons in the presence of a spatially varying atomic scattering length and nonlinearity. The dynamics of bright and dark solitary waves is studied using the corresponding Gross-Pitaevskii equation. The numerical results are shown to be in very good agreement with the predictions of the effective equations of motion derived by adiabatic perturbation theory. The spatially dependent nonlinearity is found to lead to a gravitational potential, as well as to a renormalization of the parabolic potential coefficient. This feature allows one to influence the motion of fundamental as well as higher-order solitons.
Hali tarjima qilinmagan
Identifikatorlar
Iqtiboslar va manbalar
8 ta iqtibos0 ta foydalanilgan manba